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Dynamic rs coverage in multi-hop cellular networksDynamic rs coverage in multi-hop cellular networks description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070184869, Dynamic rs coverage in multi-hop cellular networks. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATION AND CLAIM OF PRIORITY [0001]The present application is related to U.S. Provisional Patent No. 60/771,617, filed Feb. 8, 2006, entitled "DYNAMIC RS COVERAGE IN THE MULTI-HOP CELLULAR NETWORKS". U.S. Provisional Patent No. 60/771,617 is assigned to the assignee of the present application and is hereby incorporated by reference into the present disclosure as if fully set forth herein. The present application hereby claims priority under 35 U.S.C. .sctn.119(e) to U.S. Provisional Patent No. 60/771,617. TECHNICAL FIELD OF THE INVENTION [0002]The present application relates generally to wireless communication networks and, more specifically, to signal relay stations. BACKGROUND OF THE INVENTION [0003]Relay stations are added to wireless communications networks to increase the coverage range, user data rates, or both, at the periphery of the cellular coverage area. A multi-hop network facilitates communication between a base station and mobile stations in the extended coverage area provided by a relay station. Relay stations typically boost the downlink (base station to mobile user) and uplink (mobile user to base station) signals regardless of whether the relay station is fixed or mobile. Current systems, however, fail to effectively increase relay system coverage while employing power saving mechanisms for the relay station. Moreover, there are no procedures currently available for effectively controlling load conditions, such as the number of user traffic channels supported and the user data rates. [0004]There is therefore a need in the art for an improved relay station. In particular, there is a need for a system to effectively and efficiently increase coverage and user data rates while employing power saving mechanisms for the relay station. SUMMARY OF THE INVENTION [0005]The present disclosure provides a technique for extending the coverage of a relay station with minimal power usage. [0006]In one embodiment of the disclosure, a method is provided for managing cell coverage in a wireless network having a relay station in communication with a mobile station. The method includes comparing a threshold power setting of a relay station with a current power setting of the relay station. When the threshold power setting is greater than the current power setting, the method includes incrementing the threshold power setting and decreasing the cell coverage. [0007]In another embodiment of the disclosure, a method is provided for managing cell coverage in a wireless network having a relay station in communication with a mobile station. The method includes comparing a threshold power setting of a relay station with a current load setting of the relay station. When the threshold power setting is greater than the current load setting, the method includes increasing the cell coverage. [0008]In still another embodiment, a relay station is provided for use in a wireless network. The relay station includes a controller. The controller is capable of comparing a threshold power setting of a relay station with a current power setting of the relay station. When the threshold power setting is greater than the current power setting, the controller increments the threshold power setting; and decreases the cell coverage. If, however, the threshold power setting is less than or equal to the current power setting, the controller decrements the threshold power setting until the threshold power setting is equal to a total power setting of the relay station and increases cell coverage. [0009]Before undertaking the DETAILED DESCRIPTION OF THE INVENTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document: the terms "include" and "comprise," as well as derivatives thereof, mean inclusion without limitation; the term "or," is inclusive, meaning and/or; the phrases "associated with" and "associated therewith," as well as derivatives thereof, may mean to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, or the like; and the term "controller" means any device, system or part thereof that controls at least one operation, such a device may be implemented in hardware, firmware or software, or some combination of at least two of the same. It should be noted that the functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. Definitions for certain words and phrases are provided throughout this patent document, those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior, as well as future uses of such defined words and phrases. BRIEF DESCRIPTION OF THE DRAWINGS [0010]For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts: [0011]FIG. 1 illustrates a multi-hop cellular network according to one embodiment of the present disclosure; [0012]FIG. 2 is a flow diagram illustrating the operation of the multi-hop cellular network according to one embodiment of the present disclosure; and [0013]FIG. 3 is a flow diagram illustrating the operation of the multi-hop cellular network according to another embodiment of the disclosure. DETAILED DESCRIPTION OF THE INVENTION [0014]FIGS. 1 through 3, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged wireless network. [0015]FIG. 1 illustrates an exemplary multi-hop cellular network 100 according to an embodiment of the present disclosure. Multi-hop cellular network 100 preferably includes the use of, for example, a fixed relay station (FRS) 101 and a mobile relay station (MRS) 102. Multi-hop cellular network 100 forms a multi-hop link between a base station (BS) 104 and a mobile station (MS) 103 served by BS 104. Multi-hop cellular network 100 extends the coverage range, user data rates and coverage area of a base station (BS) 104. Multi-hop cellular network 100 provides a method and procedure for coverage or range expansion, load control and balancing, and power savings for the relay station. In addition, FRS 101 and MRS 102 may extend the coverage of a cellular network 100 by providing transmission and reception links for other mobile stations (not shown) served by BS 104. [0016]According to one embodiment of the present disclosure, FRS 101 is hard-wired to the base station 104, while MRS 102 is preferably wirelessly connected to BS 104. Alternatively, FRS 101 may be a nomadic relay station wirelessly connected to BS 104. Although the following primarily describes embodiments of the present disclosure in conjunction FRS 101, it should be understood that other suitable relay stations, such as relay station MRS 102, may also be used. [0017]The transmission power level of FRS 101 is power controlled to keep the power level at a minimum while allowing communication with base stations. Thus, in accordance with one embodiment of the present disclosure, FRS 101 effectively reduces interference within the network and thus increases the capacity of cellular network 100. In one embodiment of the present disclosure, FRS 101 generally includes two modes of operation. [0018]In the first operation mode, the available power level for FRS 101 is kept relatively low. In accordance with one embodiment of the disclosure, FRS 101 may accordingly reduce the transmit power level (TX) or reduce the user data rate. Preferably, different thresholds are defined for the operation. In the first threshold, FRS 101 transmits the signal to mobile stations, such as MS 103, in the cell in order to indicate the reduction of the cell coverage. Accordingly, the mobile stations handoff to a neighboring cell or relay station. Continue reading about Dynamic rs coverage in multi-hop cellular networks... Full patent description for Dynamic rs coverage in multi-hop cellular networks Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Dynamic rs coverage in multi-hop cellular networks patent application. 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When the mobile communication terminal exists in the service area ... 20090280852 - Transmission power target value variable control apparatus and method and mobile communication terminal - A T-SIR generation unit (106a) generates, on the basis of an actual reception quality (205) in a mobile communication terminal, a target value T-SIR to be used to control transmission power of a base station from the mobile communication terminal. When the mobile communication terminal exists in the service area ... ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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